How do I copy and paste a URL to my browser?

Highlight the URL / address you want to copy.

Control or right click that and select "Copy"

Now move to the browser.

Highlight the address bar.

Control or right click that and select "Copy"

Click "enter".

This article explains how to make a clickable link.

http://support.apple.com/kb/PH11346

To post a link this Q & A click the blue "A" in the menu bar.

Delete whatever in the textfield and paste the URL.